[Fix PYI063] Use PEP 570 syntax for positional-only parameters

Author: Pierre-Sassoulas

pyproject.toml

@@ -156,7 +156,6 @@ lint.ignore = [
     "PLW0120", # remove the else and dedent its contents
     "PLW0603", # Using the global statement
     "PLW2901", # for loop variable overwritten by assignment target
-    "PYI063",
     # ruff ignore
     "RUF012", # Mutable class attributes should be annotated with `typing.ClassVar`
     "UP031",

testing/example_scripts/dataclasses/test_compare_dataclasses_with_custom_eq.py

@@ -10,7 +10,7 @@ class SimpleDataObject:
         field_a: int = field()
         field_b: str = field()
 
-        def __eq__(self, __o: object) -> bool:
+        def __eq__(self, __o: object, /) -> bool:
             return super().__eq__(__o)
 
     left = SimpleDataObject(1, "b")